Sensor node having self localization function and self localization method thereof

Inactive Publication Date: 2010-06-17
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]Accordingly, all sensor nodes in a sensor network can recognize a location thereof by using location variation of two mobile nodes without using an anchor node, an

Problems solved by technology

However, when a distance between the anchor node and a sensor node is measured using the RSSI, a great amount of distance error occurs, and thus localization error is increased.
For this reason, in order to precisely measure a distance, additional equipment such as ultrasonic wave transceiver and an amplifier is necessary and high amounts of power are consumed.
As a result, the distance error is increased and thus localization error is increased.
In addition, in a ranging-free localization, if the number of anchor nodes is small, localization error is increased.
However, when the initiation of a sensor network is performed, a large number

Method used

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  • Sensor node having self localization function and self localization method thereof
  • Sensor node having self localization function and self localization method thereof
  • Sensor node having self localization function and self localization method thereof

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Embodiment Construction

[0022]The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses and / or systems described herein. Various changes, modifications, and equivalents of the systems, apparatuses and / or methods described herein will suggest themselves to those of ordinary skill in the art. Descriptions of well-known functions and structures are omitted to enhance clarity and conciseness.

[0023]In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter with unnecessary detail.

[0024]Before describing the exemplary embodiments, terms used throughout this specification are defined. These terms are defined in consideration of functions according to exemplary embodiments, and can be varied according to a purpose of a user or manager, or a relevant standard and so on. Therefore, definitions of the terms should be made on the basis...

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Abstract

Disclosed are a sensor node having a self localization function and a self localization method of the sensor node. The sensor node calculates a location thereof by receiving location information measured at each of two mobile nodes at different times and using four location information of the received location information. Additional cost and power consumption required for installing additional equipment such as an anchor node, a ultrasonic transceiver and a signal amplifier are reduced.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2008-0127965, filed on Dec. 16, 2008, the disclosure of which is incorporated by reference in its entirety for all purposes.BACKGROUND[0002]1. Field[0003]The following description relates to a technology of locating a sensor node in a sensor network, and more particularly, to a sensor node having a self localization function and a self localization method thereof.[0004]2. Description of the Related Art[0005]In order to enhance the value of sensing data in most applications of sensor networks, it is very important to recognize a location of all sensor nodes. Conventional localization schemes of a sensor network are mainly divided into a ranging based localization and a ranging-free localization. The former is a performed by measuring a distance between an anchor node indicating a location through a received signal strength indicator (RSSI) or a t...

Claims

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Application Information

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IPC IPC(8): H04W88/02
CPCG01S5/0027H04W64/003G01S5/02G01S5/011G01S5/14
Inventor PARK, JONG-JUNJEONG, HOONJOO, SEONG-SOONCHAE, JONG-SUK
Owner ELECTRONICS & TELECOMM RES INST
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